bus: fsl-mc: mc-io: Supply function names for 'fsl_create_mc_io()' and 'fsl_destroy_mc_io()'

Fixes the following W=1 kernel build warning(s):

 drivers/bus/fsl-mc/mc-io.c:53: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
 drivers/bus/fsl-mc/mc-io.c:126: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst

Cc: Stuart Yoder <stuyoder@gmail.com>
Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20210617110500.15907-1-lee.jones@linaro.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/bus/fsl-mc/mc-io.c

@@ -50,7 +50,7 @@ static void fsl_mc_io_unset_dpmcp(struct fsl_mc_io *mc_io)
 }
 
 /**
- * Creates an MC I/O object
+ * fsl_create_mc_io() - Creates an MC I/O object
  *
  * @dev: device to be associated with the MC I/O object
  * @mc_portal_phys_addr: physical address of the MC portal to use
@@ -123,7 +123,7 @@ int __must_check fsl_create_mc_io(struct device *dev,
 }
 
 /**
- * Destroys an MC I/O object
+ * fsl_destroy_mc_io() - Destroys an MC I/O object
  *
  * @mc_io: MC I/O object to destroy
  */